INDEX

law, 111, 118, 132, 136, 149, 157, 233, 282, 292, 512, 514-5, 518, 525 principle, 146, 300, 308-9, 312 no-class theory, 478 nominalism, 28, 125, 321, 333, 335 non-Euclidean geometry, 55, 59, 388 language, 127 space, 55, 235, 237 straight, 236, 470 world, 75 number, 31 big, 88 imaginary, 283 incommensurable, 44 transfinite, 448-9 whole, 44, 469 objectivity, 209, 347, 349, 408 optical illusions, 202 optics, 174, 496 orbit of Saturn, 341 order, 385 orientation, 83 osmotic, 141 Padoa, 463 Panthéon, 414 parallax, 470 parallels, 56, 443